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SiiE and SiiF do not influence persistence in bovine alveolar macrophages. The mean numbers of gentamicin-protected bacteria of the ST4/74 Nalr, ΔsiiE, ΔsiiF, and prgH::miniTn5Km2 mutant strains recovered per well at 2 h, 6 h, and 24 h postinfection are shown. Each bar is presented with the standard error of the mean. *, P <0.05.
